<template>
  <el-breadcrumb class="app-breadcrumb" separator="/">
    <transition-group name="breadcrumb">
      <el-breadcrumb-item
        v-for="(item, index) in levelList"
        :key="item.id"
        :class="{ 'active-breadcrumb': index === activeBreadcrumbIndex }"
        @click.native="handleLink(item, index)"
      >
        <span>{{ item.name }}</span>
        <!-- <a @click.prevent="handleLink(item)">{{ item.name }}</a> -->
      </el-breadcrumb-item>
    </transition-group>
  </el-breadcrumb>
</template>

<script>
import { createDynamicRoute } from '@/api/user.js'
import pathToRegexp from 'path-to-regexp'

export default {
  data() {
    return {
      activeBreadcrumbIndex: null,
      levelList: []
    }
  },
  watch: {
    $route(route) {
      // if you go to the redirect page, do not update the breadcrumbs
      if (route.path.startsWith('/redirect/')) {
        return
      }
      this.getBreadcrumb()
    }
  },
  created() {
    this.getBreadcrumb()
  },
  methods: {
    getBreadcrumb() {
      createDynamicRoute().then((res) => {
        this.levelList = res.routeTable
        console.log(res.routeTable)
      }).catch((rej) => {
        this.$message.error(rej)
      })
    },
    isDashboard(route) {
      const name = route && route.name
      if (!name) {
        return false
      }
      return name.trim().toLocaleLowerCase() === 'Dashboard'.toLocaleLowerCase()
    },
    pathCompile(path) {
      // To solve this problem https://github.com/PanJiaChen/vue-element-admin/issues/561
      const { params } = this.$route
      var toPath = pathToRegexp.compile(path)
      return toPath(params)
    },
    handleLink(item, index) {
      this.activeBreadcrumbIndex = index
    }
  }
}
</script>

<style lang="scss" scoped>
.app-breadcrumb.el-breadcrumb {
  display: inline-block;
  font-size: 14px;
  line-height: 50px;
  margin-left: 8px;

  .no-redirect {
    color: #97a8be;
    cursor: text;
  }
  .active-breadcrumb {
    font-size:18px;
  }
}
</style>
